船用HND三燃料发动机研究进展及发展趋势探讨

由于船用发动机节能减排的需要,使用清洁能源作为替代燃料成为一个重要的发展方向。结合国内外针对氢-天然气-柴油(HND)三燃料发动机的研究,分析此类发动机燃烧性能和排放性能。增加氢气在混合燃料中的比例使得发动机缸内压力峰值提升,缸内温度增加,有助于提高发动机效率和机动性;一氧化碳、二氧化碳、总碳氢排放随氢气比例的升高而减少;氮氧化物排放有所增加;颗粒物排放显著减少。随着氢能源战略的发展,船用HND三燃料发动机在未来有望得到商业化推广应用。

Research progress and development trend of marine HND tri-fuel engine

According to the requirements for energy saving and emission reduction of marine engines,the use of clean energy as an alternative fuel has become an important development direction.In this paper,combined with domestic and foreign research on hydrogen-natural gas-diesel(HND)three-fuel engines,the combustion performance and emission performance of such engines are analyzed.As the proportion of hydrogen in the mixed fuel increases,the peak pressure in the engine cylinder increases and the temperature in the cylinder increases.This helps improve engine efficiency and maneuverability.CO,CO₂ and THC emissions decrease as the proportion of hydrogen increases.NOx emissions have increased.PM emissions are significantly reduced.With the development of the hydrogen energy strategy,marine HND tri-fuel engines are expected to be commercialized and applied in the future.